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Thread: Billet lowers...Spikes or Mega

  1. #61
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    WOW!

    That was just unwise.
    Last edited by JSantoro; 04-26-11 at 00:08. Reason: Cleanup, aisle #4!
    Never judge a man by his success, judge by how he deals with his failures!- L.E.C.

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  2. #62
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    Stop quoting the trolls, please, gents.

    It's a lower receiver. It's not unrequited love.
    Contractor scum, AAV

  3. #63
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    Forging is the cheaper/faster way to produce lowers. Billet stuff is nice but it does take longer to machine(time is money) and you pay for that time in the pricing. One unique fact about forged lowers is they have a few thousandths "twist" in most of them after the "platter" is machined. Alot of material gets removed from the platter and they "move". This minor movement is not detrimental to function of the weapon but it does happen.

    7075 Aluminum does flex... Aircraft wing spars are made from this material.

  4. #64
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    Quote Originally Posted by bo-hoss View Post
    Forging is the cheaper/faster way to produce lowers. Billet stuff is nice but it does take longer to machine(time is money) and you pay for that time in the pricing. One unique fact about forged lowers is they have a few thousandths "twist" in most of them after the "platter" is machined. Alot of material gets removed from the platter and they "move". This minor movement is not detrimental to function of the weapon but it does happen.

    7075 Aluminum does flex... Aircraft wing spars are made from this material.
    *sigh*

    Making up a NEW custom die for a low volume part is WAY more expensive than having someone run a design through a CAM program and running a mill on it. Not to mention last time I checked most 10 man shops don't have a drop forge out back, they are huge, expensive, and require their own staff.

    Forged parts are cheap because the die patterns already exist and a lot of companies buy the same forgings, then finish them.

    Running a CNC mill on a blank takes ONE semi-skilled operator and a set of plans. There's no flash, no finish work, it just wastes a lot of material.

    I don't know why you are talking about twist. Forged blanks have to be finished. That's where you add parallel faces etc.

  5. #65
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    I never said anything about making a new die or having a forge out back,
    only a comment about forgings being cheaper overall to mfg. a blank lower forging-vs- a billet from a piece of bar-stock. There is less machine time in machining a forging.

    The reason you don't know about forging twist after machining a platter is because you most likely have never programmed,machined,and QC'd a forged lower. They do move around after machining and the movement can be measured. I have programmed, set up, and machined several hundred lowers for T&E purposes. How many have you done??? What is your experience with the manufacturing process on these types of parts??
    I look forward to your reply.

  6. #66
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    This one has already gone down the shitter once and it's not going to happen again.
    Only hits count......you can not miss fast enough to catch up

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